package com.oss.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.google.appengine.api.users.User;
import com.google.appengine.api.users.UserService;
import com.google.appengine.api.users.UserServiceFactory;

/**
 * @author xueqiang.mi
 * @date 2010-2-8
 */
public class SecurityFilter implements Filter {

	@Override
	public void destroy() {

	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain filterChain) throws IOException, ServletException {
		HttpServletRequest httpRequest = (HttpServletRequest) request;
		HttpServletResponse httpResponse = (HttpServletResponse) response;
		UserService userService = UserServiceFactory.getUserService();
		User user = userService.getCurrentUser();
		if (user == null) {
			httpResponse.sendRedirect(userService.createLoginURL(httpRequest
					.getRequestURI()));
		} else if (!user.getEmail().equals("alloyer@gmail.com")) {
			httpResponse.sendRedirect("/index.do");
		}
		filterChain.doFilter(request, response);
	}

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {

	}

}
